<template>
  <el-dialog top="5vh" title="新增员工" :visible="showDialog" @click.native="closeTree" @close="closeDialog">
    <!-- 表单 -->
    <el-form ref="form" :model="formData" :rules="rules" label-width="120px">
      <el-form-item label="姓名" prop="username">
        <el-input v-model="formData.username" style="width:50%" placeholder="请输入姓名" />
      </el-form-item>
      <el-form-item label="手机" prop="mobile">
        <el-input v-model="formData.mobile" style="width:50%" placeholder="请输入手机号" />
      </el-form-item>
      <el-form-item label="入职时间" prop="timeOfEntry">
        <el-date-picker v-model="formData.timeOfEntry" style="width:50%" placeholder="请选择入职时间" />
      </el-form-item>
      <el-form-item label="聘用形式" prop="formOfEmployment">
        <el-select
          v-model="formData.formOfEmployment"
          style="width:50%"
          placeholder="请选择"
        >
          <el-option
            v-for="item in EmployeeEnum.hireType"
            :key="item.id"
            :label="item.value"
            :value="item.id"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="工号" prop="workNumber">
        <el-input v-model="formData.workNumber" style="width:50%" placeholder="请输入工号" />
      </el-form-item>
      <el-form-item label="部门" prop="departmentName">
        <el-input
          v-model="formData.departmentName"
          style="width:50%"
          placeholder="请选择部门"
          @click.native.stop="getDepartments"
        />
        <!-- 这里需要加定位的样式，外面需要包一个盒子 -->
        <div v-if="showTree" class="tree-box">
          <el-tree
            v-loading="loading"
            :data="treeData"
            :props="{ label: 'name' }"
            @node-click="handleNodeClick"
          />
        </div>
      </el-form-item>
      <el-form-item label="转正时间" prop="correctionTime">
        <el-date-picker v-model="formData.correctionTime" style="width:50%" placeholder="请选择转正时间" />
      </el-form-item>
    </el-form>
    <!-- footer插槽 -->
    <template v-slot:footer>
      <el-button @click="closeDialog">取消</el-button>
      <el-button :loading="submiting" type="primary" @click="submitAdd">确定</el-button>
    </template>
  </el-dialog>
</template>

<script>
import EmployeeEnum from '@/api/constant/employees'
import { reqGetDepartments } from '@/api/departments'
import { tranListToTreeData } from '@/utils'
import { reqAddEmployee } from '@/api/employees'

export default {
  props: {
    showDialog: {
      type: Boolean,
      default: false
    }
  },
  data() {
    return {
      EmployeeEnum,
      formData: {
        username: '', // 用户名
        mobile: '', // 手机号
        formOfEmployment: '', // 聘用形式
        workNumber: '', // 工号
        departmentName: '', // 部门
        timeOfEntry: '', // 入职时间
        correctionTime: '' // 转正时间
      },
      rules: {
        username: [
          { required: true, message: '用户姓名不能为空', trigger: ['blur', 'change'] },
          { min: 1, max: 4, message: '用户姓名为1-4位', trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '手机号不能为空', trigger: ['blur', 'change'] },
          { pattern: /^1[3-9]\d{9}$/, message: '手机号格式不正确', trigger: ['blur', 'change'] }
        ],
        formOfEmployment: [
          { required: true, message: '聘用形式不能为空', trigger: ['blur', 'change'] }
        ],
        workNumber: [
          { required: true, message: '工号不能为空', trigger: ['blur', 'change'] }
        ],
        departmentName: [
          { required: true, message: '部门不能为空', trigger: ['blur', 'change'] }
        ],
        timeOfEntry: [
          { required: true, message: '请选择入职时间', trigger: ['blur', 'change'] }
        ]
      },
      treeData: [], // 定义数组接收树形结构的数据
      showTree: false, // 默认隐藏
      loading: false, // 是否在加载中
      submiting: false // 是否在发送提交请求中
    }
  },
  methods: {
    closeDialog() {
      // 重置数据
      this.formData = {
        username: '', // 用户名
        mobile: '', // 手机号
        formOfEmployment: '', // 聘用形式
        workNumber: '', // 工号
        departmentName: '', // 部门
        timeOfEntry: '', // 入职时间
        correctionTime: '' // 转正时间
      }
      // 重置状态
      this.$refs.form.resetFields()
      this.$emit('update:showDialog', false)

      // 按钮状态关闭
      this.submiting = false
    },
    async getDepartments() {
      this.showTree = !this.showTree
      // 如果showTree false，说明tree要隐藏了，不需要发请求了
      if (this.showTree === false) return
      // 准备要发送请求之前，改loading为true
      this.loading = true

      const { data } = await reqGetDepartments()
      this.treeData = tranListToTreeData(data.depts, '')

      setTimeout(() => {
        this.loading = false
      }, 500)
    },
    closeTree() {
      this.showTree = false
    },
    handleNodeClick(data) {
      // 触发是每个节点都能触发点击，但是不同的节点需求不同
      // 1. 有孩子的情况，应该展开子代 (默认就能展开)
      // 2. 没有孩子的情况，才是选中

      // 对于有子节点的情况， 直接 return， 不管
      if (data.children && data.children.length > 0) return

      // 没有子节点的情况 => 叶子节点
      this.formData.departmentName = data.name

      // 关闭下拉菜单
      this.showTree = false
    },

    async submitAdd() {
      await this.$refs.form.validate()
      // 开启loading
      this.submiting = true

      try {
        await reqAddEmployee(this.formData)
        this.$message.success('添加成功')
        this.$emit('add-employee')
        setTimeout(() => this.closeDialog(), 500)
      } catch (e) {
        // 恢复按钮可以点击的状态
        setTimeout(() => (this.submiting = false), 500)
      }
    }
  }
}
</script>

<style lang="scss" scoped>
.tree-box {
  position: absolute;
  width: 50%;
  min-height: 50px;
  left: 0;
  top: 45px;
  z-index: 100;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding-right: 5px;
  overflow: hidden;
  background-color: #fff;
  max-height: 200px;
  overflow: auto;
  ::v-deep {
    .el-tree-node__content {
      height: auto;
    }
  }
}
</style>
